C#/Mysql测验只有5个问题

我的代码有点问题，希望你能帮助我。

我正在写一个测验，在表格上显示问题，您可以通过单击"5个答案"按钮中的一个来回答这些问题。问题存储在Mysql数据库中。

在每个游戏中，玩家必须回答5个问题，问题来了：

在5个问题之后，它不会进入评分页。

如何解决此问题？

这是我的尝试：

     public int richtig;
        int Counter = 0;
        string Loesung, AntwortA_value, AntwortB_value, AntwortC_value, AntwortD_value, AntwortE_value;
        string cmdText = "SELECT fragen,A,B,C,D,E,Loesungen from Fragen order by Rand() Limit 1;";
        string MyConString = "SERVER=localhost;DATABASE=quiz;UID=xxx;PASSWORD=xxx;";
        public Fragen()
        {
            InitializeComponent();
            Questions();
        }
        private void Antworten_Click(object sender, EventArgs e)
        {
            if (Counter != 4)
            {
                Questions();
                Counter++;
            }
            else
            {
            }

        }
        private void Questions()
        {
            if (Counter != 5)
            {
                using (MySqlConnection connection = new MySqlConnection(MyConString))
                {
                    try
                    {
                        MySqlCommand cmd = new MySqlCommand(cmdText, connection);
                        connection.Open();
                        MySqlDataReader reader = cmd.ExecuteReader();
                        while (reader.Read())
                        {
                            FragenTitel.Text = (reader[0].ToString());
                            AntwortA.Text = (reader[1].ToString());
                            AntwortB.Text = (reader[2].ToString());
                            AntwortC.Text = (reader[3].ToString());
                            AntwortD.Text = (reader[4].ToString());
                            AntwortE.Text = (reader[5].ToString());
                            Loesung = (reader[6].ToString());
                            AntwortA_value = (reader[1].ToString());
                            AntwortB_value = (reader[2].ToString());
                            AntwortC_value = (reader[3].ToString());
                            AntwortD_value = (reader[4].ToString());
                            AntwortE_value = (reader[5].ToString());
                        }
                        reader.Close();
                        connection.Close();
                        //lblError.Text = "Data Saved";
                    }
                    catch (Exception)
                    {
                        MessageBox.Show("not entered");
                        //lblError.Text = ex.Message;
                    }
                }
            }
            else
            {
                Auswertungen Aw = new Auswertungen();
                Aw.Show();
            }
            Counter = richtig;
        }
        #region Antwortbuttons
        private void AntwortButtonA_Click(object sender, EventArgs e)
        {
            if (AntwortA_value == Loesung)
            {
                MessageBox.Show("Richtig");
                Counter++;
                richtig++;
                Questions();
            }
            else
            {
                MessageBox.Show("Falsch");
                Counter++;
                Questions();
            }
        }
        private void AntwortButtonB_Click(object sender, EventArgs e)
        {
            if (AntwortB_value == Loesung)
            {
                MessageBox.Show("Richtig");
                Counter++;
                richtig++;
                Questions();
            }
            else
            {
                MessageBox.Show("Falsch");
                Counter++;
                Questions();
            }
        }
        private void AntwortButtonC_Click(object sender, EventArgs e)
        {
            if (AntwortB_value == Loesung)
            {
                MessageBox.Show("Richtig");
                Counter++;
                richtig++;
                Questions();
            }
            else
            {
                MessageBox.Show("Falsch");
                Counter++;
                Questions();
            }
        }
        private void AntwortButtonD_Click(object sender, EventArgs e)
        {
            if (AntwortD_value == Loesung)
            {
                MessageBox.Show("Richtig");
                Counter++;
                richtig++;
                Questions();
            }
            else
            {
                MessageBox.Show("Falsch");
                Counter++;
                Questions();
            }
        }
        private void AntwortButtonE_Click(object sender, EventArgs e)
        {
            if (AntwortE_value == Loesung)
            {
                MessageBox.Show("Richtig");
                Counter++;
                richtig++;
                Questions();
            }
            else
            {
                MessageBox.Show("Falsch");
                Counter++;
                Questions();
            }
        #endregion

        }
        private void Score_uebername()
        {
          //  richtig = Auswertungen.Punktzahl;
        }
    }
}

 if (Counter != 4)
            {
                Questions();
                Counter++;
            }
            else
            {
            }

if (Counter != 5)
            {
               ....
            }
            else <--this condition is never met because Counter never gets to 5
            {
                Auswertungen Aw = new Auswertungen();
                Aw.Show();
            }